FAQ for Gear of Yieh Chen
Q1. What is the MOQ for customized precision gears at Yieh Chen?
Yieh Chen Machinery specializes in the production of customized precision gears. Depending on the module size and process complexity, the average batch production quantity is 100~2,000 pieces. (Note: This range does not apply to planned annual mass production programs).
Q2. What materials does Yieh Chen use for high-precision gears?
We primarily use high-grade materials compliant with JIS standards (Japan). To optimize costs and delivery time for our global clients, we recommend using the following equivalent materials instead of importing specific US/EU grades:
| Category | Common Specifications (JIS / Local) |
|---|---|
| Carbon Steel | S45C (Equiv. to AISI 1045) |
| Alloy Steel | SCM440, SNCM439, SAE 8620 (Equiv. to AISI 4140 series) |
| Stainless Steel | SUS303, SUS304, SUS630 (Equiv. to AISI 300/600 series) |
Q3. What heat treatment services (Carburizing, Nitriding) does Yieh Chen offer?
We provide a full range of heat treatment processes to ensure the gears meet specific hardness and durability requirements:
- Tempering
- Carburizing
- Nitriding
- Full Hardening
- Induction Hardening (Surface Frequency)
Q4. What precision grades (JIS/AGMA/DIN) can Yieh Chen gears achieve?
We manufacture gears according to major international standards. The highest precision grades we achieve are:
- JIS Grade 0
- AGMA Grade 15
- DIN Grade 2
- ISO Grade 2
Q5. What are Yieh Chen's capabilities for Gear Grinding and Hobbing?
We offer various manufacturing methods categorized by accuracy requirements (from High to Low):
| Method | Module (M) | Max Outer Dia. | Accuracy (AGMA) |
|---|---|---|---|
| Gear Grinding | M0.5 ~ 14 | Ø500 mm | 12 ~ 15 |
| Gear Shaving | M0.5 ~ 6 | Ø400 mm | 10 ~ 13 |
| Gear Shaping | M0.5 ~ 6 | Ø600 mm | 10 ~ 13 |
| Gear Hobbing | M0.5 ~ 20 | Ø800 mm | 8 ~ 13 |
Q6. Is Yieh Chen certified with AS9100 D and ISO 9001 for aerospace gears?
Yes. Yieh Chen is strictly committed to quality assurance and holds the following certifications:
- ISO 9001:2015 Certified
- AS9100 D (Aerospace Basic Quality System) Compliant
Q7. What files are required for a quotation? (Do you do reverse engineering?)
We specialize in Build-to-Print manufacturing. To provide an accurate quote, please provide:
- 2D Drawings (PDF): Indicating tolerances, materials, and heat treatment hardness.
- 3D Files (STEP / IGES): For geometry reference.
Note: We currently do not provide reverse engineering services (copying from samples without drawings).
Q8. What is the standard production cycle?
Our manufacturing process prioritizes quality stability. The lead time varies based on gear complexity and heat treatment requirements.
Since we strictly follow AS9100 quality inspection procedures at every stage, sufficient time is required to ensure you receive defect-free precision parts.
Q9. How are the products packaged for international shipping?
To prevent corrosion during sea or air freight, we implement strict packaging standards:
- Anti-Rust Protection: All gears are coated with anti-rust oil and sealed in VCI (Volatile Corrosion Inhibitor) bags.
- Physical Protection: Parts are packed in sturdy cartons or wooden crates suitable for export.
Q10. Does Yieh Chen manufacture gears for UAVs (Drones) and Aerospace applications?
Yes. As an AS9100 D certified manufacturer, Yieh Chen is fully qualified to produce critical transmission components for:
- UAVs / Drones: High-RPM and lightweight gears for propulsion systems.
- EVTOL: Electric Vertical Take-off and Landing aircraft components.
We specialize in machining lightweight materials such as Aluminum Alloy (7075) and Titanium, ensuring high strength-to-weight ratios required for flight.
Q11. What gear solutions do you offer for Robotics and AGVs?
We provide high-precision gear solutions for the rapidly growing automation industry, including:
| Robotic Arms & Cobots | Low Backlash gears to ensure precise positioning and smooth movement. |
| AGVs / AMRs | Durable transmission gears for Automated Guided Vehicles (Logistics robots). |
| Noise Reduction | Through precise Gear Grinding and tooth profile modification, we minimize noise levels for indoor robotic applications. |